[XeTeX] Russian fonts

[Olly Powell]

Hello fellow Xetexers

I am having trouble with a Cyrillic font named "Perestroika", I downloaded somewhere.  It works fine in open-office, but is giving funny results in Xetex.  Perhaps somebody could explain the problem, or suggest a good Cyrillic font for Russian placenames in an English novel.

Here is the code:
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\begin{document}
\setmainfont{Times New Roman}


1. \russ{уфе ьн ырщкеы}

2.  \russ{eat my shorts}

3. \rusp{уфе ьн ырщкеы}

4.  \rusp{eat my shorts}
\end{document}

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1.  and 2.  work as expected.  3 gives square boxes, and the error messages "Missing character: there is no N$f in font Perestroika/ICU !
4.  Gives some russian characters.

Thanks very much

Olly